>What do you see in the log file and did you clean all your previous installations?

On that one, it required a restart. I did. I did a repair and all went ok. Then, I started SSMS and guess what. It cannot connect. This is the same situation as before. However, this time I did select the System account.

When I go in SSMS, it tries to connect with my account. I would say this is where it is blocking. There might be some kind of policies that need to be set up. This is the SQL Server administrator account that we select during the installation.